Major General LeRoy Springs Lyon (15 October 1866 – 23 February 1920) was a United States Army officer.

[3] In 1898, Lyon graduated from the Coast Artillery School at Fort Monroe, Virginia,[1] and was immediately appointed aide to General Royal T. Frank at Chickamauga Park, Anniston and Department of the Gulf headquarters.

[1] Lyon served in the Panama Canal Zone from 1916 to 1917, where he was promoted to colonel in May 1915[1] before returning to the United States to command Camp Bowie, Texas, until May of the same year.

[5] After the First World War, Lyon returned to the United States on 13 May 1919[1] and was conferred the honorary degree of Doctor of Laws by Richmond College on 17 June 1919.

[7] He was posthumously awarded the Distinguished Service Medal for his excellent leadership of the 65th Field Artillery Brigade and the 31st Infantry Division.